Install Tool feature "Create admin user" can't handle umlauts in username
When a username like 'dörthe' is entered, the user will be created with the username 'drthe' instead. No warning or error message will reveal this to the user.
In the TYPO3 Backend there is no problem when a username with umlauts in it is created; it just works as expected.
There should be one of the following:
- a warning, that the username is invalid or not possible via the Install Tool
- an error that the username could not be created as requested
- the username is accepted and set correctly
[TASK] Harmonize allowed characters of backend usernames
When creating new backend users from the intall tool, any
character is now accepted for the username. Whitespaces get
trimmed and uppercase is converted to lowercase.
This is already the case for TCA of be_users.username
Reviewed-by: Mathias Schreiber <firstname.lastname@example.org>
Tested-by: Mathias Schreiber <email@example.com>
Reviewed-by: Christian Kuhn <firstname.lastname@example.org>
Tested-by: Christian Kuhn <email@example.com>